After putting up 427, their second highest score in the five-day game, the tail-up Tigers got the Australians in all sorts of trouble on the second day of the first Test as the tourists were reduced to 145 for six.

With Adam Gilchrist, the only recognised batsman at the crease, and Brett Lee at the other end, the world champions were fighting to score another 83 runs to avoid the ignominy of following-on against the lowest-ranked team.

There were discussions how the vaunted Australian batting line-up response after Bangladesh, resuming the day on 355 for five, added 72 runs to their overnight total before being bowled out half-an-hour after lunch.

Chasing a total of 427, the going got tough for the Australians as they floundered on a wicket that remained slow and low. After Bangladesh's new-ball pair Mashrafee Bin Mortuza and Shahadat Hossain had drawn the first blood, left-arm spinners Mohammad Rafique and Enamul Haque got Ricky Ponting's men on the ropes, evenly sharing four wickets.

When the world-class Aussie pacers struggled on the slow pitch, the Mashrafee-Shahadat pair started the operation with a big heart to stun their mighty opponents.

Tearaway Mashrafee gave the breakthrough as early as in the third over when he trapped Mathew Hayden (6) leg before wicket with only six runs on the board. But the real shock came into the world champions' fort when Shahadat got the prize-wicket of Ponting, who came here on the back of a rich vein of form. The master batsman went back to one that swung in from middle and kept low and struck him right in front of the wicket for 21, the scoreboard reading 42-2.

Then it was the story of two left-arm spinners who simply moped up the Australian top order.

Earlier in the morning, leg-spinner Stuart MacGill picked up the remaining five Bangladesh wickets to return career-best figures of 108-8, but his party was marred by the efforts of the Bangladeshi bowlers towards the end of the day. The 35-year-old leggie's previous best was 7-50 against old-foes England.

Rajin Saleh made a compact 67 to take the Tigers' total beyond the 400-run mark for the fourth time in their 43rd Test. The total is also their second highest after their 488 against Zimbabwe in early 2005 in Chittagong.

Earlier ahead of the second day's play, Australia received a cheque for 500,000 dollars for being this year's top side in the LG ICC Test Championship and ICC ODI Championship.

They retained a comfortable advantage in both official tables over the course of the 12-month period. This is the second consecutive year in which Australia have benefited from their dominance of both the Test and ODI tables on the April 1 cut-off date.